The key to determining the boiling time is what kind of medicine is used in the herbal formula. If it is a cold remedy, because the main effect is the volatile oil contained in the medicine, it is sufficient to boil it for fifteen to twenty minutes after boiling. General medicines such as tonic medicines are first boiled with a large fire (called martial fire in Chinese medicine). Then simmer it slowly with a low fire (civil fire). The idea of “diagnosis and treatment” in Chinese medicine is also reflected in the boiling of medicine. Before boiling the medicine, bubble it with water to help release the active ingredients. Simmer the medicine in cold water. Gradually increase the temperature to help release the active ingredients. A decoction container is suitable for casserole, enamelware, stainless steel, iron is strictly prohibited. Chinese medicine should be soaked in cold water for about 60 minutes before decoction. The amount of water used for decoction is generally 1-3 cm over the surface of the medicine. The amount of water can be increased for large doses and for drugs that can easily absorb water. Decoction time should be determined according to the nature of the medicine. Decoction time should be determined according to the nature of the medicine. Decoction time should not be long for antiphlogistic drugs, antipyretic drugs and aromatic drugs, but 15-20 minutes after boiling. Tonic drugs should be boiled in martial fire and then slow decocted in civil fire for 40-60 minutes. The decoction should be stirred 2-3 times. Each dose of Chinese medicine is usually decocted twice, and the second decoction time can be slightly shorter. Decoction quantity: 50-100ml per dose for children. Adults should take 150-200ml per dose. V. Decoction methods for special drugs: 1. “Decoction first”: boil for 10-15 minutes, then add other drugs to the same decoction. 2. “Decoction later”: when the general drug is about to be decocted to a predetermined amount, put in the same decoction for 5 – 10 minutes. 3, “Dissolved medicine”: should be taken when other medicines are decocted to the intended serving amount, and the juice should be decocted over a light fire, and dissolved by constant stirring. 4. “Punch medicine”: punch medicine is mixed into the decocted juice or boiled water. 5. Other special medicines are decocted according to medical advice.